Parts/Service for VP-A20/VP-A21

Precautions

1. Protective Devices: Ensure all built-in protective devices and shields are replaced during reassembly.

2. Safety Checks: Verify that no openings in the cabinet allow fingers to contact dangerous voltages. Check resistance values for abnormalities.

3. Leakage Current Test: Perform a hot check for leakage current after reassembly. Ensure it does not exceed 0.5 mA.

4. X-ray Limits: Replace the picture tube only with the same type to maintain X-ray protection.

5. Static Electricity: Take precautions against static discharge when handling semiconductor components (ESDs).

6. High Voltage: Be aware of high voltage limits when servicing horizontal deflection or high voltage circuits.

7. Design Alteration: Do not alter the design of the unit; it may create safety hazards and void the warranty.

8. Hot Chassis: Ensure correct AC plug polarity when servicing hot chassis units or use an isolation transformer.

9. Interlocks: Never defeat B+ voltage interlocks. Ensure heat sinks are correctly installed before applying power.

10. Lead Dress: Observe original lead dress and check wiring for damage or pinching.

11. Picture Tube Implosion: Use only the specified replacement picture tube for implosion protection.

12. Product Safety: Use exact replacement components that have the same safety-related characteristics as the original to avoid shock or fire hazards.